"With the new year, Maryland becomes the first state to ban the use of additives containing arsenic in chicken feed, a practice already prohibited by Canada and the European Union."
"Last year, Pfizer suspended sales of its drug Roxarsone, an arsenic-based drug used to fight parasites in animals, after a Food and Drug Administration test showed trace amounts of the known carcinogen in the livers of chickens."
John Wagner and Errin Haines report for the Washington Post December 31, 2012.
Source: Wash Post, 01/02/2013
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